Method for improving ore grade of molybdenum concentrate with precise separating segment

Abstract

The invention discloses a method for improving molybdenum concentrate grade by adopting a concentration stage. The invention comprises the technological process of the ore-feeding closed-circuit regrinding of a concentration I flotation column, a concentration II flotation column, and a concentration IV flotation column. The invention is characterized in that the concentration IV ore feeding, that is, concentration III foam enables pulp to overflow so as to enter the concentration IV flotation column after being classified by a hydrocyclone; a slurry pump is added on the tailings part of the concentration IV flotation column so as to enable the concentration IV tailings to return the concentration III flotation column, thereby forming a closed circuit; and concentration IV foam enters concentration V, the tailings of the concentration V and concentration III foam enters the concentration IV after being reground, and the foam of the concentration IV flotation column is directly regarded as final products. Therefore, the enrichment ratios of the concentration III, the concentration IV, and the concentration V pulp are increased, the flotation time is prolonged, and the grade of the final concentrates is improved significantly.

Description

technical field [0001] The invention belongs to the technical field of molybdenum beneficiation, and mainly relates to a method for improving the grade of molybdenum concentrate in a beneficiation section. Background technique [0002] The known technological process of molybdenum beneficiation and beneficiation section, such as figure 1 Shown: Refined I flotation column, refined II flotation column and refined IV flotation column feed ore in a closed circuit for regrinding, refined IV ore feed means refined III foam is classified by a hydrocyclone, and the overflow pulp enters the refined IV column, refined The IV flotation column foam directly enters the fine V flotation column, the fine V foam is dehydrated and dried to be the final high-grade product, and the fine IV tailings and fine V tailings are dehydrated and dried to be the final low-grade product. After the refined V is used, the refined V foam is dehydrated and dried as the final high-grade product, and its grad...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at the drawbacks that the grade of the final molybdenum concentrate product in the existing beneficiation process is low, and the high and low grade products of the concentrate have a large workload in the process of dehydration, drying, mixing and packaging. The overflow slurry enters the refined IV flotation column after being classified by the deflector, and the tailings of the refined IV flotation column return to the refined III flotation column to form a closed circuit. The refined IV foam enters the refined V, and the refined V tailings and refined III foam enter after regrinding Refined IV constitutes a closed-circuit beneficiation

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